Condenser



' Das, 22, 1933i. t5. F. GRACE CONDENSER Filed May 29, 192B l? ATTORNEY Jorlnul GRACE.

Patented Dec. 22, 1931 rre sATEs Pn'rru'r oFFIc-E JOHN F. GRACE, OF ARLINGTON, N EW'J' ERSY, ASSIGNOR TO WORTHINGTON PUMP ALNI) l MACHINERY CORPORATION, F N EW Y0 RK, N. Y., A CORPORATION OF VIRGINIA CONDENSER This invention relates to surface condensers, and an object of the invention is to provide a surface condenser, constructed to prevent leakage of circulating cooling water into the steam space, in which condenser, the cooling water tubes are expanded at both ends into the tube heads and suitable means are provided to compensatefor expansion and contraction of the tubes due to temperature variances within the condenser. i y

It is an object of the present invention to provide a simple, efficient and relatively inexpensive condenser construction which will permit iiuid tight connections between the tubes and the tube heads, allowing movement of one of the tube heads relative to the casing of the condenser, to compensate for expansion and contraction of the tubes under variances of the temperatures, within the condenser,` while localized temperature variances and the resultant unequal expansion and contraction of certain of the tubes relative to others, will be compensated for by independent movenient of the tubes relative to one of the tube heads.

More specifically, the present invention comprises a condenser such as shown and de scribed in my companion application tiled March 8th, 1928, Serial Number 260,020, in which one of the tube heads iiexes to compensate for expansion and contraction ot the tubes and the present invention also provides means to permit the tubes to move independently of each other and relative to one of the tube heads, while suitable means are provided to prevent creeping of the tubes at their connection with the other tube head.

lVith these objects in view, the inventionY consists in various features of construction and combination of parts, which will be first' described in connection with the accompany-- ing drawings, showing a condenser ofthe preferred form embodying the invention, and the features forming the invention will be specifically pointed out in the Claims.

Fig. l is a longitudinal section through a condenser constructed in accordance with this invention.

2 is an enlarged detailed section show- 1928. Serial No. 281,506.

ing in section a tube and its connection with the tube heads.v

Fig. 3 is a detailed section similar to Fig. 2 showing a modified form of the invention, and.

Fig. 4 is a view similar to Fig. 2 showing a still further modiiication of the invention.

Referring more particularly to the drawings, the improved condenser comprises the usual case l which has the tube heads 2 and- 3 mounted therein which carry the tubes 4. The tubes 4 open through the tube heads 2 and 3 into the Water boxes 5 and 6 so as to permit circulation of cooling water through the condenser for condensing steam which enters the condenser through the steam or exhaust inlet 7.

In the present invention, the tube head 3 is greater in diameter than the tube head 2 and it is also thinner so as to permit it to flexhead 2 and lightly.expanded into the tube,

4'sheet or head 3 so as to provide fluid tight connections between the tubes and the tube heads. The tubes 4 extend only v partly through the tube head 2 and ferrules l0 are threaded into the tube head 2 and'abutthe inner ends of thetubes 4 so as to prevent creeping of the tubes relative to the tube head 2..V The ends of the tubes, at the tube head 3, also extend only part of the way through the tube head, and they extend into the counter bores 1l of the ferrules 12. The ferrules l2 are threaded into the tube head 3 and engage about the outer surface of the rends ofthe tubes 4 which tubes are lightly expanded into the tube head 3, where they engage the said tube head. The tubes 4 terminate short of the shoulders 13 in the ferrules 12, which are formed by the counter bores ll,`so as to permit independent movement of each tube relative to the other tubes ing of any suitable type,

i are spaced so as to permit independent move- Vfiat ment of the tubes 4 vunder expansion. andv contraction.

In Fig. 4 of the drawines,still a further modified form of the invention is shown'and in this form the Vtubes 4A have their ends inserted through the tube head 2A and expanded therein, the ferrules 10 being eliminated. Thetubes 4A, however, extend only part of the Way through vthe tube head 3A, having their inner ends spaced from the innerends of the ferrules 16,1eaving a space 17 to permit independent movement of the tubes 4A under expansion and contraction, lWhile theferrules 16 limit the outward movementv of the tubes.

lVhile in Figs. Zand 8 of the drawings, the ferrules 10 are shoivmthey being eliminated in Fig. 4, it is to be understood that errules corresponding to these errules 10 may be used'iny connection With any of the formslshovvn in Figs. 2 to 4, or'they'maybe eliminated `as desired Without departing "from the spirit of this invention.

VVlith condensers constructed in accordance With the present invention, the tubes "are prevented, even though they should be "snapped across, 'from'crawling or creeping out at either end, because they are heldin In case tubes position by the errules.

should Wear and Work loose'at the flexible tube head end, it can be easily packed, or paclfing 15' renewed, to provide tight v nonleaking connection With the iiexible tube Y head. Y

V by providing less resistance to movement of the tubes atjthe tube heads 3, 3. or 3A and y In all the forms of the invention shown Will be noted that the length of theportions lof, the tubes expanded Vin the tube heads 3, 3

or 3A is'less than the length of the portions of may be modified Widely Within the invention defined by the claims.

W'hat is claimed is:

l. In a condenser, tube heads, tubes having their ends expanded into the tube heads, ferrulesloarried by one of said vtube heads and abutting the ends of :the tubes, ferruies carried by the other tube head and partly surrounding the ends of the tubes, said last named ff'eriules provided With shoulders spaced sufficiently 'to 'permit limited `inovement of the tubes under expansion and contraction, and packing mounted about the ends ofthe'tubes/inivardly of said last named ferrules.

2. In a condenser, tubeheads, tubes having their ends expanded into said heads, one oi' said'headsbeing of larger diameter and thinner than theother and adapted to 'fiex to compensate for limited expansion and contraction oi the tubes, ferrules carried by said larger and thinner tube head and spaced from the ends of the tubes suiiciently to permit limited movement of the tubes under expansion and contraction, packing mounted about the ends of the tubes in said larger tube head, land ferrules carried by the other of said tube heads and abutting'the ends of the tubes.

In testimony whereof I affix my signature.

JOI-IN F. GRACE.

the tubes expanded in the tube'head 2 or its w in Figs. 3 and 4 of the drawings, and'it Vis to be understood that such lengths'are lightly expanded in the respective tube sheets thereconsequently if there is any 'longitudinal independent, or creeping movement `of the tubes it Will be at the ends vvvhere provision for such vmovement is made. v Y v 4It Will be understood that theinvention is "not to be limited*V to Vthe specificV 'construction 'or'arrangementof parts shoy'vnbut that these corresponding tube head in Vthe forms shown lee 

